Answer: 2.
- A 1
- B 2
- C 3
- D 0
Correct answer: B. 2
Explanation: Highest derivative is d²y/dx² (second derivative). Order = 2.
The general solution y=Ax² represents an entire FAMILY of curves, one for each value of the arbitrary constant A; a particular solution (fixed by an initial condition) selects exactly one curve from this family.
Concept context
Equations involving derivatives and their solutions